Bug 2418103 - CVE-2025-64076 python-cbor2: cbor2: Integer Underflow and Memory Leak leading to Denial of Service [epel-8]
Summary: CVE-2025-64076 python-cbor2: cbor2: Integer Underflow and Memory Leak leading...
Keywords:
Status: CLOSED NOTABUG
Alias: None
Product: Fedora EPEL
Classification: Fedora
Component: python-cbor2
Version: epel8
Hardware: Unspecified
OS: Unspecified
high
high
Target Milestone: ---
Assignee: Carl George 🤠
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard: {"flaws": ["baada591-dbb9-4e1a-b074-6...
Depends On:
Blocks: CVE-2025-64076
TreeView+ depends on / blocked
 
Reported: 2025-12-01 20:49 UTC by Praise Ogwuche
Modified: 2026-04-10 23:18 UTC (History)
2 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed: 2026-04-10 23:18:44 UTC
Type: ---
Embargoed:

Attachments (Terms of Use)

Description Praise Ogwuche 2025-12-01 20:49:54 UTC 
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

The following link provides references to all essential vulnerability management information. If something is wrong or missing, please contact a member of PSIRT.
https://spaces.redhat.com/display/PRODSEC/Vulnerability+Management+-+Essential+Documents+for+Engineering+Teams
Comment 1 Fedora Admin user for bugzilla script actions 2026-04-02 13:20:26 UTC 
This package has changed maintainer in Fedora. Reassigning to the new maintainer of this component.
Comment 2 Carl George 🤠 2026-04-10 23:18:44 UTC 
The affected function (decode_definite_long_string) was first introduced in version 5.6.0.

https://github.com/agronholm/cbor2/commit/387755eacf0be35591a478d3c67fe10618a6d542

EPEL 8 has version 5.1.2 and thus is not affected.
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